Guglielmo Ferrero,
The Women of the Caesars
“ Germanicus married Agrippina, another daughter of Julia and Agrippa, and a sister of Julia the Younger; the widow of Caius Caesar, Livilla, sister of Germanicus and daughter of Antonia, was given to Drusus, the son of Tiberius, a young man born in the same year as Germanicus. Drusus, despite certain defects, such as irascibility and a marked fondness for pleasure, gave evidence that he possessed the requisite qualities of a statesman—firmness, sound judgment, and energy. ”
